Apparently, Willis now has silver (or possibly gray) hair.
Check it out:
At VaughtsViews: Derek Willis figured "people would eat that stuff up" when he changed his hair color https://t.co/d9JL66sqhg— Advocate Messenger (@amnewsonline) December 9, 2015
Coach Cal and Derek Willis have the same hair now. #BBN— Darth (@KYDarth) December 9, 2015
Alex Poythress on Derek Willis' hair: "No comment." Laughs.— Alex Forkner (@AlexForknerTCP) December 8, 2015